"...the best gun in the galaxy won't help if your opponent is bashing your brains out with a rock!"
— Warhammer 40000 Rulebook, 3rd Edition, "Fighting a Close Combat"
"The more sophisticated the technology, the more vulnerable it is to primitive attack. People often overlook the obvious."
— The Doctor, Doctor Who
"That's not fair! They've got rocks, all we've got are these machine guns!"
— Snidley Whiplash, Dudley Do-Right
"The more complex a weapon, the more likely it is to have flaws. Kan Pojo was the best pistoleer I ever saw, then or since, but he was waxed by what was essentially a whittled rock when his state-of-the-art weapon failed."
— Admiral Helaw, Death Star
"Basically, it comes down to morale," [Cordelia Ransom] said. "I'm not going to suggest that morale can overcome enormous material odds. All the courage and determination in the universe won't mystically enable a mob armed with rocks to overcome trained infantry in battle armor, and you wouldn't believe me if I told you it could, now would you?"
"The Asgard have tried to stop [the Replicators]. You have demonstrated their weakness may be found from a less sophisticated approach. We are no longer capable of such thinking."
"The Asgard would never invent a weapon that propels small weights of iron and carbon alloys by igniting a powder of potassium nitrate, charcoal and sulfur. ... We cannot think like you."
— Thor, "Small Victories," Stargate SG-1